From: Stefan Behrens <sbehrens@giantdisaster.de>
Date: Mon, 5 Nov 2012 13:10:49 +0000 (+0000)
Subject: Btrfs: Don't trust the superblock label and simply printk("%s") it
X-Git-Tag: v3.8-rc1~71^2~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d03f918ab9036cc71740c0aa796c8e02e6f6f6d3;p=pandora-kernel.git

Btrfs: Don't trust the superblock label and simply printk("%s") it

Someone who is root or capable(CAP_SYS_ADMIN) could corrupt the
superblock and make Btrfs printk("%s") crash while holding the
uuid_mutex since nobody forces a limit on the string. Since the
uuid_mutex is significant, the system would be unusable
afterwards.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

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